The SRAM XX1 Eagle AXS 12-speed chain is a high-performance lightweight chain that features a unique design for significantly improved wear resistance on Eagle cassettes and rings.Features:- Eagle chain links have a smooth radius, with no sharp edges or chamfers which yields a significant reduction in noise, friction and wear- PowerLock chain connector features Flowlink technology to provide superior chain-guiding and increased longevity- Hollow pins feature a hardened chrome treatment for long-term durabilitySpecifications:- Drivetrain Speeds: 12- Chain Connection Type: Single Use Master Link- Links (links): 126- Half Link Chain: No